The CMM21T-670M-N is a common mode choke from Chilisin, designed to suppress common mode noise in various electronic applications. It's a surface-mount device, making it suitable for automated assembly processes. Common mode chokes are essential components in reducing electromagnetic interference (EMI) and ensuring signal integrity.

Applications:

• USB interfaces: Filtering noise on USB data lines.
• Ethernet interfaces: Reducing common mode noise in Ethernet communications.
• Signal and data lines: General noise suppression on various signal lines.
• Power line filtering: Reducing noise emanating from power lines.
• Consumer electronics: Used in televisions, computers, and other devices to meet EMC requirements.

Features:

• High common mode impedance: Effectively suppresses common mode noise.
• Low differential mode impedance: Minimizes signal distortion.
• Surface mount design: Suitable for automated assembly.
• Compact size: Saves board space.
• High reliability: Designed for long-term performance.

Benefits:

• Improved signal integrity: Reduces noise and interference, resulting in cleaner signals.
• Reduced EMI: Helps to meet electromagnetic compatibility (EMC) standards.
• Increased system reliability: Protects sensitive circuits from noise.
• Smaller product size: Enables more compact designs.
• Cost-effective noise suppression: Provides a simple and effective solution for noise problems.

Technical Specifications:

While specific detailed specifications such as impedance at particular frequencies, rated current, and DC resistance require consulting the official Chilisin datasheet for CMM21T-670M-N, generally common mode chokes like this feature:

• Inductance: Value related to the choke's ability to block common-mode noise. The '670M' likely refers to 67uH inductance with a tolerance.
• Rated Current: The maximum current the choke can handle without saturating or overheating.
• DC Resistance (DCR): The resistance of the choke's windings. Low DCR is important to minimize power loss.
• Operating Temperature: The range of temperatures the choke can operate within.
• Impedance vs. Frequency: A key characteristic showing how effectively the choke blocks noise at different frequencies.

For precise values, refer to the manufacturer's datasheet.